Global Patent Index - EP 1624032 B1

EP 1624032 B1 20070725 - Water-based inks for ink-jet printing

Title (en)

Water-based inks for ink-jet printing

Title (de)

Wässrige Tinten für Tintenstrahldruck

Title (fr)

Encre à base aqueuse pour l'impression par jet d'encre

Publication

EP 1624032 B1 20070725 (EN)

Application

EP 05017050 A 20050805

Priority

  • JP 2004231227 A 20040806
  • JP 2004318686 A 20041102

Abstract (en)

[origin: EP1624032A1] There are provided a water dispersion for ink-jet printing comprising colorant-containing water-insoluble graft polymer particles in which the water-insoluble graft polymer contains a main chain which is a polymer chain containing a constitutional unit derived from a salt-forming group-containing monomer (a) and a constitutional unit derived from an aromatic ring-containing (meth)acrylate monomer (b), and a side chain which is a polymer chain containing a constitutional unit derived from a hydrophobic monomer (c); a water-based ink for ink-jet printing using the water dispersion; and an ink-jet printing method using the water-based ink. In accordance with the present invention, printed images or characters formed on a coated paper are excellent in gloss, image clarity and image clarity property including both of the image clarity and the gloss, and printed images or characters formed on an ordinary paper exhibit a high print density.

IPC 8 full level

C09D 11/00 (2006.01)

CPC (source: EP US)

C09D 11/30 (2013.01 - EP US); C09D 11/32 (2013.01 - EP US)

Designated contracting state (EPC)

DE FR GB

DOCDB simple family (publication)

EP 1624032 A1 20060208; EP 1624032 B1 20070725; DE 602005001732 D1 20070906; DE 602005001732 T2 20080430; US 2006030640 A1 20060209; US 7291659 B2 20071106

DOCDB simple family (application)

EP 05017050 A 20050805; DE 602005001732 T 20050805; US 19085705 A 20050728